Lean Burn Engines

Attainment Technologies low emission system for lean burn engines is based on "virtual lean burn process". With the help of some engine enhancements, the highly efficient lean burn combustion process is retained while there is no excess air used in the combustion process. This technology combines the advantages of both lean burn and rich burn engines:
   · High efficiency of lean burn engines
   · High power output of lean burn engines
   · Low engine knock tendency of lean burn engines
   · Ultra low emissions
        - Availability of Non-Selective Catalytic Reduction ("NSCR") three-way catalyst technology
             *NSCR is a proven technology with high conversion rates for all air pollutants

ERU 1001 Emission Control System for Lean Burn Engines:

The ERU 1001 is Attainment Technologies proprietary U.S. Patented emission reduction system for spark ignited lean burn reciprocating engines. A simulated lean-burn combustion process is obtained via minor engine enhancements. Instead of excess air, re-circulated and cooled exhaust gas is used as a heat sink. High, lean burn engine compression ratios can be used without engine knock complications. Engine performance and fuel efficiency is equivalent to a standard lean burn engine. The huge advantage compared to lean burn engines is the availability of NSCR as an emission after-treatment. This is possible, since there is no excess oxygen in the exhaust stream.

Emissions for a Caterpillar 3516TA with an Attainment Technologies ERU 1001 System

Rich Burn Engines

Attainment Technologies low emission system for rich burn engines is similar to the lean burn engine process. It is also based on a "virtual lean burn process". With the help of additional engine enhancements, the less efficient rich burn engine is modified to become more of a lean burn style engine. Once again, excess air is removed from the combustion process. This technology combines the advantages of rich burn and lean burn engines:

   · Ultra low emissions
        - Availability of Non-Selective Catalytic Reduction ("NSCR") three-way catalyst technology
             *NSCR is a proven technology with high conversion rates for all air pollutants
    · Higher efficiency, more similar to lean burn engines
    · Higher power output, more similar to lean burn engines
    · Low engine knock tendency, more similar to lean burn engines

ERU 1002 Emission Control System for Rich Burn Engines:

The ERU 1002 is Attainment Technologies proprietary U.S. Patented emission reduction system for spark ignited rich burn reciprocating engines. A simulated lean-burn combustion process is obtained for the rich burn engine. The simulated lean burn process will lower the engine raw emissions dramatically. The use of Exhaust Gas Recirculation can lower the NOx raw emission by up to 80%. Second and maybe even more important is the higher power output and better fuel efficiency when a higher compression ratio can be used. Experience with a Caterpillar 3516 turbocharged engine show increase in Power output by 10% and a decrease in fuel consumption of 7% when this principal is applied.

Emissions for a Caterpillar 3516TA with an Attainment Technologies ERU 1002 System

Compression Ignition or Diesel Engines
Compression Ignition engines are commonly fueled by diesel fuel hence the common name "Diesel Engine". Diesel engines are mainly challenged by Particulate Matter ("PM"), NOx, CO and HC emission regulations. Proper Maintenance (especially fuel injectors) can readily improve emissions if the engine is not properly maintained. Attainment Technologies' 25 years of experience in the Diesel engine market can assist your company in optimizing your Diesel engine to reduce emissions to the lowest extent possible.

Dual Fuel Conversion for Diesel Engines

One method that is gaining significant momentum at this time our conversion of your Diesel engine to a dual fuel (natural gas and Diesel) engine. This conversion is part of our emissions and engine optimization strategy since it combines the benefits of lower emissions with the benefits of fuel efficiency and power density inherit in a standard Diesel engine.

Further improvements can be achieved with various after-treatment systems: